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arXiv 1602.05342cs.GT
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图限制通信的享乐对策

Hedonic Games with Graph-restricted Communication

Ayumi Igarashi, Edith Elkind

摘要:

我们研究享乐联盟形成游戏中的球员之间的合作是有限的图形结构:一个子集的球员可以形成一个联盟,当且仅当他们在给定的图连接。我们调查的复杂性,在这样的游戏中找到稳定的结果,稳定的几个概念。特别是,我们提供了一个有效的算法,找到一个单独的稳定分区的任意享乐游戏上的无环图。我们还引入了一个新的稳定性概念-在邻居的稳定性-这是专为我们的设置。我们发现,找到一个在邻居的稳定结果的问题承认一个多项式时间算法,如果底层图是一条路径,但对于任意树,甚至是可加性可分的享乐游戏是NP-难的;对称的可加性可分的游戏,我们得到了PLS-硬度的结果。

英文摘要:

We study hedonic coalition formation games in which cooperation among the players is restricted by a graph structure: a subset of players can form a coalition if and only if they are connected in the given graph. We investigate the complexity of finding stable outcomes in such games, for several notions of stability. In particular, we provide an efficient algorithm that finds an individually stable partition for an arbitrary hedonic game on an acyclic graph. We also introduce a new stability concept -in-neighbor stability- which is tailored for our setting. We show that the problem of finding an in-neighbor stable outcome admits a polynomial-time algorithm if the underlying graph is a path, but is NP-hard for arbitrary trees even for additively separable hedonic games; for symmetric additively separable games we obtain a PLS-hardness result.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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